Heating system.



PATENTED APR. 28, 1908';

T. P. SGOLLARD.

HEATING SYSTEM.

APPLICATION FILED JUNE 4, 1907.

J TTORNE Y5 [iv a THOMAS F. SCOLLARD, OF WARSAW, INDIANA.

HEATING- SYSTEM.

Specification of Letters Patent.

, Patented April as, 1908.

Application filed June 4, 1907. Serial No. 377,167.

To all whom it may concern:

Be it known that I, THOMAS F. SCOLLARD, a. citizen of the United States,residing at Warsaw, in the county of Kosciusko and State of Indiana,have invented a new and useful Heatim System, of which the followin is aspecification.

his invention has reference to improvements in heating systems, and isdesigned to provide means whereby hot air may be furnished for heatingpurposes and at the same time the fire used to heat the air may likewisebe utilized for the heating of water to produce steam for variouspurposes, which steam, however, is ultimately condensed and returned tothe boiler to be again converted .into steam, in endless cycles, theengine furnishing the power for returning the water of condensation tothe boiler. in this systom the power'furnished by the steam may likewisebe utilized for other purposes. Also,

provision is made where'l'iy' the exhaust tures 5 in alternate diametricrelation.

steam from the en ine made to further heat the air sup lied to thehot-air circulating system, so that the'energy of the steam not utilizedfor the driving of the engine may be converted into heat units toaugment the heat supplied to the air by the hot-air side,

of the furnace.

The invention-will be fully understood from the following detaileddescription, taken in connection with the accom )anying drawings formingpart of this speciiication, in which,-

Figure 1 is a sectional view through the furnace and other partscoacting therewith, with still other coacting parts shown in elevationand in diagrammatlc relation to theiur- Referring to the drawings, thereis shown a furnace 1 composed of an outer drum '3 and an inner drum 3]01D6tl by horizontal part1- tions 4 extending between the two drums,-

and these partitions are provided with a erair passes to the nextchamber formed be tween the said partition 4 and the next partition 4above the same. The air must now move half-way around the drum 3 t theopening 5 located in the second partition 4, and thence reach thechamber inmiediatcly above the same, and must then move around the drum3 to the other side thereof until it reaches still another aperture 5 inthe next upper partition 4 directly over the firstnamed aperture 5, andmay then ass to the distributing chamber 8 and out t irough the lines 9.

Within the drum 3 there is located a steam boiler 11 composed of avertical series of annular, iron tubes 12, diamond shape. in crosssection. These tubes 12 may each be made of two semi-circular sectionsjoined together at the ends in any suitable manner, and atsuitablepoints may have formed on 'them hollow bosses 13 through whichcommunication may be had from tube to tube, and through which bossesclamp rods 14 ma extend, with nuts 15 applied to the ends, whereby thewhole series of tubes may be formed into one interconnected structure.in order that the joints may be steam and water-tight suitable coppergaskets may be used, or, if desired, taper nipples may be employed as iscustomary for such purposes.

A certain number of the tubes 12 may have their continuity broken forthe reception of a coal chute 16 passing through both drums 2 and 3 andprovided with an ordmary hreplace door 17 on the exterior of the outerdrum .2. The tubes 12 constituting the steam boiler are mounted at thelowermost end of the series upon an annular support 18 nace; Fig. 2 IS across sectlon of the furnace.

drum 2 is closed at the top by a top plate 6 I and the drum 3 is closedby a flat crown 7 located a short distance below the top plate 6,

which the heated air is to be distributed. (old air is made to enter thelower portion of the s 'ace between the drums 2 and 3 through a co d airduct 10, and after reaching t 1e opening 5 in the lowermost partition 4the.

at the top of which may be located a suitable grate it), conventionallyshown in Fig. l.

The boiler 11 forms the lire-box and the interior .of the support 12sconstitutes the ashpit. A suitable passageway 20 mav be led through thedrums 2 and 3 to the ashpit, and this passageway may be closed by an ash)it door 21. Leading from the interior of t \e drum 3 near the lower endthereof is a smoke line 22. Suppose, now, that the boiler 11 is tilledwith water to a suitable height and that by means of the fuel introducedthrough the coal chute l6 a'fire is started upon the grate 19. The heatof the tire will be communicated through the. walls of the tubes 1'. tothe water therein and the roducts of combustion will pass up througlithe upper end of the series of tubes and over the said upper end andthence downward along their outer faces and against the inner face ofthe drum 3 until they finally escape through the smoke flue 22, it beingunderstood that a suitable air supply comes throu h the ashpit door 21,or otherwise. Now, y the passage of the heated gases in the directiondescribed the water in the boiler 11 is ultimately converted into steamand the top and side walls of the drum 3 are highly heated by said hotases and this heat is communicated to the air etween the drums 2 and 3.Thus the air entering through the air duct 10 is subjected to aconstantly increasing amount of heat and rises throw the tortuouspassage around the drum 3 until it ultimately reaches the distributingchamber 8, where it is still further heated by contact with the crown 7,and finally passes out through the tines 9 to the various points ofutilization.

Leadin up from the top of the boiler 11 through the crown 7 and thenceout through the drum 2 is a live steam pipe 23 connected at the otherend to a steam engine 24. The engine is. rovided with a drive wheel 25from whicl i power is taken by a belt 26 to the drive pulley 27 of adynamo electric machine 28 furnishing current to a storage battery 29 orto any other suitable translating device desired.

The exhaust' from the engine is carried through an exhaust pipe 30 to acondenser coil 31 located within a suitable casing 32,

and the condenser coil terminates in a res- I tearing the casi ervoir33. The casin 32 has at its outer end one or more air inl etopenings 34and at its u er end communicates through a flue 35 wit the distributingchamber 8. Now, when steam is generated in the boiler 11 it passesthrough the steam pipe 23 and engine 24 and the latter is thereby causedto run, driving the dynamo 28 and thereby causing the generation ofelectric current which may be utilized for the chargin of the storagebattery 29 or for any other use ul purpose; or the steam engine may beotherwise utilized. v V For the purposes of the resent invention thedynamo 28 and the attery 29 may be taken as indicative of any poweractuated device which may be driven by the en he 24.

be exhaust steam assing from the pipe.

30 to the coil 31 is chil ed by the cool air' en- 32 through the openingor openings 34 an is thereby condensed, the Water of condensationfinally finding its way into the reservoir 33, while the air passinginto the casing 32 through the inlet opening or openings is ultimatelyhighly heated by the condensin steam and finds its way throu h the fine35 into the distributing cham er 8, where it mingles with the hot air epoint of uti coming through the highest opieuing 5 and is zation of theThe reservoir 33 is in communication throu h a pipe 36 with a pump 37 ofany suitab le type, such as a simple 0 lacement pum and this pump isconnected y a delivery pipe 38 to the lower end of the boiler 11. Thedelivery pipe 38 is connected by a branch pipe 39 to the interior of thereservoir 33 at a suitable point above the bottom thereof, and the endof this pipe 39 is closed by any type of valve 40 under the control of afloat 41 on one end of a lever 42, The pump 37 is driven through a belt43 coming from a drive pulley 44 on the shaft of the engine 24. Now,when steam is generated in the boiler 11 and the e 'ne 24'is inoperation the steam is condense and in the form of water is finallyconducted to the reservoir 33. In the meantime the pump 37 is beingcontinuously operated from the engine and whatever water is deposited inthe reservoir 33 is drawn through the pipe 36 and delivered through thepipe 38 into the boiler 11, to be again converted into steam and passagain through the same 'cycle of operations.

Suppose that the pump delivers water more rapidly than the water isintroduced into the reservoir 33 by the condensation of the exhauststeam. Insuch case the water level in the reservoir 33 is reduced andthe float 41, following the reduced level of the water, will cause theopening of the valve 40 and the water instead of being delivered to theboiler 11 will flbw back through the branch pi e 39 into the reservoiruntil the level of t 0 water in the latter has again reached the pointwhere the valve 40 is closed. By this means the pump 37 is alwa s inoperation but it is active onl when t e water level in the boiler issuch t at there is enough water in the reservoir 33 to close the valve40. Otherwise the pump simply pumps back into the reservoir 33 what ittakes therefrom through the ipe 36.

It will be seen from the oregoing that I am enabled to furnish from onefire the heat necessary to provide hot. air for a dwelling commensuratewith the size of the hot-air furnace, and at the same time a portion ofthe heat so generated is, by means of the boiler 11 and engine 24,converted into useful work which may be utilized in various ways. Andalso, the water which is converted into steam for ower urposes is, afterperforming its wor furt ier utilized to augment the heat of the airsupplied by the hot-air furnace for the heating of the dwelling. By thiswhichusually escapes through the smoke no is saved and converted intouseful work, while the energy usually lost by the escape of the exhauststeam is entirely saved and utilized for heating purposes.

- Since the heatingsystem is'designed more a rm of dis ical parts shouldbe of the automatic type so as to require no skilled attention from thehouseholder. For this reason'the steamengineshould be of the automatictype so as to operate for long eriods of time without at tention fromthe ous'eholder. Likewise, the dynamo may be of the self-contained type,requiring no attention-whatever for months at a time, while the storagebattery is rovided so that current may be enerate in the day time whenthe furnace es are kept at a greater heat than at night and'the electriccurrent so generated may be utilized at night when the furnace fires arenot so energetically burning.

1. A heating system comprising anair-, heating furnace, .a. steamgenerator .contained therein, a steam engine receiving steam fromthe'generator, an air-cooled condenser for the exhaust steam from theengine, a pump driven by the engine for returning the water ofcondensation to the steam generator, and means for directing the airused to cause the condensation of steam into the air-heating system ofthe furnace. 2. A heating system comprising a steam generatorconstituting .a fire-pot, a fire chamer surrounding the'same, anair-heating chamber exterior to the fire chamber, hot air ducts leading.from the -top--of the airheating chamber, a steam engine connected tothe steam enerator, a steam condensing coil connected to the exhaustside of the steam engine, a water reservoir connected to the water sideof the condenser, a pump connected to the reservoir and to the steamgenerator, connections between the .pump and the engine, and an airchamber surrounding the condenser, said air chamber having air inlets atthe water end of the condenser and communicatin at the other end withthe airheatin cham r adjacent to the hot-air ducts eading therefrom.

' voir.

3. A heating system comprising a tortuous, air-heating chamberterminating in out-going air ducts, a fire chamber interior.

to the air-heating chamber, a fire-box composed of interconnected,diamond-shaped, metallic, annular tubes constituting a steam boiler, asteam engine, live steam connections between the boiler and engine, anair- ,cooled condenser, connections between the same and the exhaustside of the engine, a water reservoir connected -with' the water side ofthe condenser, a water ump driven by the engine and interposed etweenthe water reservoir and the boiler,- and a chamber surrounding thecondenser and receivim air at the water side'of the condenser anddelivering the heated air at the receiving connections between the steamboiler and the engine,- an air-cooled condenser connected to theexhaustside of the engine, air connections from the condenser to theairheating chamber, a water reservoir connected to the water side of thecondenser, connections between the water reservoir and the boiler, apump interposed in said connections and o erated by the engine, and abypass from tli e. connections between the water reservoir and boilerleading into said 'reservoir and there provided with a valve controlledby the water level in the said reser- In testimony that I claim theforegoing as my own, I have hereto afiixed my signature an air-heatingchamber, a

